QU

Windows Security Engineer – Quant Trading

Quant Capital london Posted 02 Oct 2026 Closing: 01 Nov 2026
Permanent Hybrid

Role Description & Technical Scope

Overview

In questa role you will secure Windows platforms for a leading quantitative trading firm. You’ll design, test and implement security controls while guiding the Windows team and collaborating with the Cybersecurity group. The role combines hands-on security work with policy development in a demanding, agile environment. You’ll operate in a globally distributed, tech-driven firm with a strong emphasis on innovation and continuous learning. This is a high-impact position with significant technical scope and growth potential.

Responsibilities
  • Design, test and implement security controls for Windows environments
  • Provide guidance, support and escalation to the Windows team
  • Collaborate closely with the Cybersecurity team on security initiatives
  • Hands-on administration of core Windows infrastructure (AD, PKI, SQL) and monitoring/performance tuning
  • Develop guidelines, standards and procedures for IT security policy
Key requirements
  • Degree from a top institution
  • Extensive experience securing Windows platforms
  • Knowledge of Windows vulnerabilities, mitigations, and OS hardening
  • Experience with log aggregation and query methods
  • Hands-on experience with Active Directory, PKI, and SQL
  • Ability to deliver solutions for complex problems
  • Good hands-on experience in agile, small-team environments
  • Powershell experience is a bonus
  • delivery mindset with focus on practical solutions
  • aptitude for working in fast-changing environments
  • hands-on, can-do attitude
  • Windows platform security
  • OS hardening and best practices
  • log aggregation and querying
Ready to apply for this cyber security position?

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Key Details
  • Date Posted: 02 Oct 2026
  • Location: london
  • Employment: Permanent
  • Workplace: Hybrid
  • Domain: General
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Employer Profile
QU
Quant Capital
Verified Tech Employer

Enterprise technology firm or security consultancy operating across the UK digital defense ecosystem.

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